32 new planets were found outside our solar system, 1 of the planets believed to be 8 times the mass of Jupiter, I only heard about this yesterday 20th of october but the story was printed on the 19th here the story [link]

I believe 20th October 1910 was the day the RMS Olympic was launched. She was the first of three ships of her class and the only one that didn't sink. The other two were the Britannic and their more famous sister ship, Titanic.

....do you mean historic events? o_OThen....how about Maria Theresa takes the throne of Austria on Oct 20th 1740 and since people were all "NO WOMAN SHALL SUCCESS THE THRONE WHEN IT SHOULD HAVE BEEN ME D<" the War of the Austrian Succession started too. :3 It can totally be useful to study history <3

Also...."Not really but the date looks very mysterious next year (at least in German version 20.10.2010)"